// BlockSlab.h // Declares cBlockSlabHandler and cBlockDoubleSlabHandler classes #pragma once #include "BlockHandler.h" #include "ChunkInterface.h" #include "../BlockInfo.h" #include "../Entities/Player.h" #include "../BlockInfo.h" class cBlockSlabHandler : public cBlockHandler { using super = cBlockHandler; public: cBlockSlabHandler(BLOCKTYPE a_BlockType): super(a_BlockType) { } virtual cItems ConvertToPickups(NIBBLETYPE a_BlockMeta, cBlockEntity * a_BlockEntity, const cEntity * a_Digger, const cItem * a_Tool) override { // Reset the "top half" flag: return cItem(m_BlockType, 1, a_BlockMeta & 0x07); } virtual bool GetPlacementBlockTypeMeta( cChunkInterface & a_ChunkInterface, cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta ) override { a_BlockType = m_BlockType; NIBBLETYPE Meta = static_cast(a_Player.GetEquippedItem().m_ItemDamage); // Set the correct metadata based on player equipped item (i.e. a_BlockMeta not initialised yet) switch (a_BlockFace) { case BLOCK_FACE_TOP: { // Bottom half slab block a_BlockMeta = Meta & 0x7; break; } case BLOCK_FACE_BOTTOM: { // Top half slab block a_BlockMeta = Meta | 0x8; break; } case BLOCK_FACE_EAST: case BLOCK_FACE_NORTH: case BLOCK_FACE_SOUTH: case BLOCK_FACE_WEST: { if (a_CursorY > 7) { // Cursor at top half of block, place top slab a_BlockMeta = Meta | 0x8; break; } else { // Cursor at bottom half of block, place bottom slab a_BlockMeta = Meta & 0x7; break; } } case BLOCK_FACE_NONE: return false; } // switch (a_BlockFace) // Check if the block at the coordinates is a single slab. Eligibility for combining has already been processed in ClientHandle // Changed to-be-placed to a double slab if we are clicking on a single slab, as opposed to placing one for the first time if (IsAnySlabType(a_ChunkInterface.GetBlock({a_BlockX, a_BlockY, a_BlockZ}))) { a_BlockType = GetDoubleSlabType(m_BlockType); a_BlockMeta = a_BlockMeta & 0x7; } return true; } /** Returns true if the specified blocktype is one of the slabs handled by this handler */ static bool IsAnySlabType(BLOCKTYPE a_BlockType) { return ( (a_BlockType == E_BLOCK_WOODEN_SLAB) || (a_BlockType == E_BLOCK_STONE_SLAB) || (a_BlockType == E_BLOCK_RED_SANDSTONE_SLAB) || (a_BlockType == E_BLOCK_PURPUR_SLAB) ); } virtual void OnCancelRightClick(cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface, cPlayer & a_Player, int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace) override { if ((a_BlockFace == BLOCK_FACE_NONE) || (a_Player.GetEquippedItem().m_ItemType != static_cast(m_BlockType))) { return; } // Sends the slab back to the client. It's to refuse a doubleslab placement. */ a_Player.GetWorld()->SendBlockTo(a_BlockX, a_BlockY, a_BlockZ, a_Player); } /** Converts the single-slab blocktype to its equivalent double-slab blocktype */ static BLOCKTYPE GetDoubleSlabType(BLOCKTYPE a_SingleSlabBlockType) { switch (a_SingleSlabBlockType) { case E_BLOCK_STONE_SLAB: return E_BLOCK_DOUBLE_STONE_SLAB; case E_BLOCK_WOODEN_SLAB: return E_BLOCK_DOUBLE_WOODEN_SLAB; case E_BLOCK_RED_SANDSTONE_SLAB: return E_BLOCK_DOUBLE_RED_SANDSTONE_SLAB; case E_BLOCK_PURPUR_SLAB: return E_BLOCK_PURPUR_DOUBLE_SLAB; } ASSERT(!"Unhandled slab type!"); return E_BLOCK_AIR; } virtual NIBBLETYPE MetaMirrorXZ(NIBBLETYPE a_Meta) override { // Toggle the 4th bit - up / down: return (a_Meta ^ 0x08); } virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override { a_Meta &= 0x7; switch (m_BlockType) { case E_BLOCK_STONE_SLAB: { switch (a_Meta) { case E_META_STONE_SLAB_SANDSTONE: return 2; case E_META_STONE_SLAB_PLANKS: return 13; case E_META_STONE_SLAB_STONE_BRICK: case E_META_STONE_SLAB_STONE: case E_META_STONE_SLAB_COBBLESTONE: return 11; case E_META_STONE_SLAB_BRICK: return 28; case E_META_STONE_SLAB_NETHER_BRICK: return 35; case E_META_STONE_SLAB_QUARTZ: return 8; default: { ASSERT(!"Unhandled meta in slab handler!"); return 0; } } } case E_BLOCK_WOODEN_SLAB: { switch (a_Meta) { case E_META_WOODEN_SLAB_BIRCH: return 2; case E_META_WOODEN_SLAB_JUNGLE: return 10; case E_META_WOODEN_SLAB_OAK: return 13; case E_META_WOODEN_SLAB_ACACIA: return 15; case E_META_WOODEN_SLAB_DARK_OAK: return 26; case E_META_WOODEN_SLAB_SPRUCE: return 34; default: { ASSERT(!"Unhandled meta in slab handler!"); return 0; } } } case E_BLOCK_RED_SANDSTONE_SLAB: { return 10; } case E_BLOCK_PURPUR_SLAB: { return 16; } default: { ASSERT(!"Unhandled blocktype in slab handler!"); return 0; } } } virtual bool IsInsideBlock(Vector3d a_Position, const BLOCKTYPE a_BlockType, const NIBBLETYPE a_BlockMeta) override { if (a_BlockMeta & 0x8) // top half { return true; } return cBlockHandler::IsInsideBlock(a_Position, a_BlockType, a_BlockMeta); } } ; class cBlockDoubleSlabHandler : public cBlockHandler { using super = cBlockHandler; public: cBlockDoubleSlabHandler(BLOCKTYPE a_BlockType): super(a_BlockType) { } virtual cItems ConvertToPickups(NIBBLETYPE a_BlockMeta, cBlockEntity * a_BlockEntity, const cEntity * a_Digger, const cItem * a_Tool) override { BLOCKTYPE Block = GetSingleSlabType(m_BlockType); return cItem(Block, 2, a_BlockMeta & 0x7); } inline static BLOCKTYPE GetSingleSlabType(BLOCKTYPE a_BlockType) { switch (a_BlockType) { case E_BLOCK_DOUBLE_STONE_SLAB: return E_BLOCK_STONE_SLAB; case E_BLOCK_DOUBLE_WOODEN_SLAB: return E_BLOCK_WOODEN_SLAB; case E_BLOCK_DOUBLE_RED_SANDSTONE_SLAB: return E_BLOCK_RED_SANDSTONE_SLAB; case E_BLOCK_PURPUR_DOUBLE_SLAB: return E_BLOCK_PURPUR_SLAB; } ASSERT(!"Unhandled double slab type!"); return a_BlockType; } virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override { // For doule slabs, the meta values are the same. Only the meaning of the 4th bit changes, but that's ignored in the below handler return BlockHandler(GetSingleSlabType(m_BlockType))->GetMapBaseColourID(a_Meta); } } ;